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Rolla, MO, United States

Missouri University of Science and Technology is an institution of higher learning located in Rolla, Missouri, United States, and part of the University of Missouri System. Most of its 8,642 students study engineering, computing, mathematics and the science. Although known primarily as an engineering school, Missouri S&T has numerous majors in humanities, social science, arts, science and business.The school is known for its repeated success in national engineering design competitions and its century-long tradition of aggrandized celebrations surrounding Saint Patrick's Day. Wikipedia.

Venayagamoorthy G.K.,Missouri University of Science and Technology
IEEE Computational Intelligence Magazine | Year: 2011

The smart electric power grid will evolve into a very complex adaptive system under semi-autonomous distributed control. Its spatial and temporal complexity, non-convexity, non-linearity, non-stationarity, variability and uncertainties exceed the characteristics found in today's traditional power system. The distributed integration of intermittent sources of energy and plug-in electric vehicles to a smart grid further adds complexity and challenges to its modeling, control and optimization. Innovative technologies are needed to handle the growing complexity of the smart grid and stochastic bidirectional optimal power flows, to maximize the penetration of renewable energy, and to provide maximum utilization of available energy storage, especially plugin electric vehicles. Smart grids will need to be monitored continuously to maintain stability, reliability and efficiency under normal and abnormal operating conditions and disturbances. A combination of capabilities for system state prediction, dynamic stochastic power flow, system optimization, and solution checking will be necessary. The optimization and control systems for a smart-grid environment will require a computational systems thinking machine to handle the uncertainties and variability that exist. The importance and contributions of the computational intelligence field for developing the dynamic, stochastic, computational, and scalable technologies needed for sensemaking, situational awareness, control and optimization in smart grids are presented in this paper. © 2011 IEEE.

Fikru M.G.,Missouri University of Science and Technology
Journal of Cleaner Production | Year: 2014

Despite numerous studies that propose environmental performance (EP) indicators for manufacturing firms, little attention is given to measuring the EP of individual companies in the waste management sector (WM sector). Existing literature on the WM sector relies on aggregate, city and municipal data. This study makes use of a disclosure regulation in the European Union to construct an EP measure that can be used to compare the environmental impact of waste-handlers across time and within the sector. The EP indicator introduced in this study measures the plan of a waste-handler to reduce undesirable output such as emission and waste disposal by relying on the recovery and recycling of wastes. Based on a sample of European waste-handlers we find that one-third of waste-handlers in Europe have zero recovery rate while only 16% rely exclusively on recovery and recycling of harmful wastes. In addition, the study builds on existing theories to explain differences in the EP of waste-handlers in Europe. Among several factors identified by the literature, we find that waste-handlers in Europe are most affected by supra-national regulations, national policies and spatial factors in that order. Policy makers can draw lessons from the findings of this study to improve existing disclosure regulations. © 2013 Elsevier Ltd. All rights reserved.

Jentschura U.D.,Missouri University of Science and Technology
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2011

The reduced-mass dependence of relativistic and radiative effects in simple muonic bound systems is investigated. The spin-dependent nuclear recoil correction of order (Zα)4μ3/mN2 is evaluated for muonic hydrogen and deuterium and muonic helium ions (μ is the reduced mass and mN is the nuclear mass). Relativistic corrections to vacuum polarization of order α(Zα)4μ are calculated, with a full account of the reduced-mass dependence. The results shift theoretical predictions. The radiative-recoil correction to vacuum polarization of order α(Zα)5-ln2(Zα) μ2/mN is obtained in leading logarithmic approximation. The results emphasize the need for a unified treatment of relativistic corrections to vacuum polarization in muonic hydrogen, muonic deuterium, and muonic helium ions, where the mass ratio of the orbiting particle to the nuclear mass is larger than the fine-structure constant. © 2011 American Physical Society.

Konur D.,Missouri University of Science and Technology
International Journal of Production Economics | Year: 2014

This paper analyzes an integrated inventory control and transportation problem with environmental considerations. Particularly, explicit transportation modeling is included with inventory control decisions to capture per truck costs and per truck capacities. Furthermore, a carbon cap constraint on the total emissions is formulated by considering emission characteristics of various trucks that can be used for inbound transportation. Due to complexity of the resulting optimization problem, a heuristic search method is proposed based on the properties of the problem. Numerical studies illustrate the efficiency of the proposed method. Furthermore, numerical examples are presented to show that both costs and emissions can be reduced by considering heterogeneous trucks for inbound transportation. © 2014 Elsevier B.V. All rights reserved.

Boretti A.,Missouri University of Science and Technology
Applied Thermal Engineering | Year: 2012

In internal combustion engines, only a part of the fuel energy flow is transformed into power available at the crankshaft, while the most part of the fuel energy flow is lost as coolant, exhaust gases and other waste heat flows. Recovery of waste heat from the exhaust gases, and the coolant with organic Rankine cycles (ORC) is considered here for a hybrid vehicle powered by a 1.8 L naturally aspirated gasoline engine. The ORC systems fitted on the exhaust and the coolant permit an increase in fuel conversion efficiency by up to 6.4% and 2.8% individually, and by up to 8.2% combined. The average improvements all over the map are 3.4%, 1.7% and 5.1% respectively. These gross improvements do not account for the less than uniform efficiency of the mechanical-to-electric-to- chemical-to-electric-to-mechanical loop when the ORC expanders are used to charge the battery of the hybrid vehicle. Nor do they account for the reduced efficiency of the thermal engine due to the back pressure effects on the indicated mean effective pressure (exhaust ORC) and friction mean effective pressure (coolant ORC). Nevertheless, these values serve as a reference point for the assessment of the current potential of a technology that is still being developed having major downfalls in the increase of weight, costs, packaging complexity and finally in difficulty in transient operation. © 2011 Published by Elsevier Ltd. All rights reserved.

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